Impact of Capsular Tension Ring on Intraocular Lens Position in Retinitis Pigmentosa Cataract Patients

Recruiting now · Not applicable

Conditions studied: Cataract, Retinitis Pigmentosa (RP)

In brief

This is a self-controlled randomized clinical trial to investigate the effect of capsular tension ring (CTR) implantation on intraocular lens (IOL) position in cataract patients with retinitis pigmentosa(RP). Each patient will receive CTR implantation in one eye, with the fellow eye serving as control. Postoperative outcomes, including visual acuity, IOL position, and postoperative complications will be compared between eyes.

Key facts

Study ID

NCT07126470

Run by

Zhongshan Ophthalmic Center, Sun Yat-sen University

People needed

88

Starts

2025-08-25

Expected to finish

2027-08-01

Last updated by the study team

2026-04-23

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Age ≥ 18 years.
• Clinical diagnosis of retinitis pigmentosa (RP).
• Bilateral cataract meeting the indications for IOL implantation.
• Willingness to participate in the study and provision of signed informed consent.

You may not qualify if…

• History of intraocular surgery.
• Severe zonular weakness (e.g., zonular dialysis >90°, lens subluxation/dislocation)
• Other ocular comorbidity: such as pseudoexfoliation syndrome, ocular trauma, corneal dystrophies, uveitis, etc.
• Severe systemic diseases: such as severe hypertension, diabetes, heart disease, Alzheimer's, Parkinson, etc.

Where it is running

• Zhongshan Ophthalmic Center, Sun Yat-sen University — Guangzhou, Guangdong, China (enrolling)
• Shenzhen Eye Hospital — Shenzhen, Guangdong, China
• Wuhan Aier Eye Hospital — Wuhan, Hubei, China

Full record on ClinicalTrials.gov

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